Yeah the crappy 1.00 figures at Dollar general, big lots, family dollar and any other stores are always ML scale even though the figures are GI joe scale. The Corps toys at walmart also are a good source. On a side note 6" figure weapons work with Deluxe scale transformers in some case for a more realistic scale than the massive things you normally see.

try looking for those cheap toy soldier toys which can be found in shops , they often come with weapons which are oversized but are in scale for 6" figs, also check out mcfalance and neca figures which have guns since they are near enough 6" scale,